Sound Meter: Decibel dB Meter

Sound Meter measures how loud it is around you, in decibels (dB), using your phone's microphone.

■ Real-time decibel meter
• Big, easy-to-read dB value and gauge
• Min / average / max (energy average, like a real meter)
• 60-second level graph
• Peak frequency (Hz)
• "About as loud as…" everyday comparison

■ Noise level guide
From rustling leaves (20 dB) to a jet engine (120 dB). A warning appears above 85 dB.

■ History & sharing
• Save measurements with min / avg / max and duration
• Share the meter as an image

■ Settings
• Calibration (±0.5 dB steps) to match a reference meter
• Fast / slow response
• Keep the screen on while measuring

Audio is analysed on your device only — nothing is recorded or sent.
Readings are estimates from your phone's microphone and vary by device. Not a certified sound level meter.